FI91910C - Locking - Google Patents

Abstract

A locking device for locking a pin or bolt (3) in a striking plate is provided with a lock mechanism which substantially comprises a guide member (200) along which a locking slide (400) is movable. The striking plate is mounted in the rebate of a door frame (7). The guide member (200) guides the axial movement of the locking slide (400) along the striking plate. When the door leaf (4) is being closed, the bolt (3) is inserted into the opening of the striking plate and at the same time into the corresponding recess (201) in the guide member (200). When the bolt (3) is positioned in the guide member (200), the locking slide (400) is moved to a locking position in which the locking slide encloses the bolt and prevents it from being withdrawn from the recess. The locking slide (400) is moved by an electrically operated driving means (500, 501).

Description

91910

The present invention relates to a locking device with respect to a movable element which is tiltable relative to the second element, and more particularly to a locking device such as that mentioned in the preamble of claim 1. The invention relates in particular to a door locking device with a door plate suspended from a door frame.

10 Many conventional locking devices comprise a lock mounted on a door leaf and provided with one or more tongues, at least one of which operates or locks by some locking mechanism. The lock further encloses a sal plate with a hole in the tongue and mounted in a recess opposite the lock in 15 frames. The tongues can be movable, i.e. the spring can keep them protruding, and they are then pushed in with the hand. Mytts immovable languages can be used. In some cases, the door leaf is equipped with completely fixed pins. What is said in this description with respect to languages is long applicable to myOs fixed pins, but for the sake of simplicity, the term language is preferred.

Locking devices are also known in which the locking mechanism is not mounted on the door leaf but on the door frame.

25 If the tongue is fixed and protrudes from the door leaf, preferably an angled latch plate with an opening for allowing the tongue to be inserted into the latch plate through an opening on the side of the latch plate parallel to the door leaf and a lap opening connected to said opening and shaped on the side of the latch plate which is depressed on the longitudinal edge surface of the door leaf when the door is closed. When the door is closed and the tongue is inserted into the latch plate, a mechanism is activated which prevents the tongue from being pulled out of the latch plate.

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An example of such a locking device can be found in U.S. Patent No. 4,017,107, which discloses a locking mechanism having a foldable plate which, in the unlocked position, is folded into the latch plate to allow the tongue to be inserted. The pivot plate requires a large hinge thickness, which is called the overall size. This means that the locking mechanism extends deep into the frame and possibly requires a certain frame thickness. To lock, the foldable disc is lowered to 10 and locks the tongue.

A slightly more primitive locking device is described in U.S. Pat. No. 1,244,910, in which the door panel has a protruding tongue which can be inserted into an opening in the door frame and a locking member which locks in a vertical direction by pressing a pedal is locked therein. The overall dimensions of this locking device are also relatively large and the actuators as well as the locking members are easily damaged.

There are other types of known locking devices 20 with one locking mechanism in the door leaf and another locking mechanism in the door frame. Such locking devices are used, for example, in the entrances of apartment buildings and then operate in such a way that any person wishing to enter can unlock the locking mechanism in the door frame by activating the control member. The control member may be designed to allow entry only at certain times. At other times, selected persons, such as caretakers, must have keys that fit into the lock mechanism on the door panel.

30 In addition, there are remote-controlled locking devices, which are entered by Akti-butter, the body that checks the pass of the person wishing to enter. Checking the pass can be done in many ways, for example with magnetic card readers. If the card containing the confirmed code is inserted into the reader of the magnetic card 35, current is applied to the lock mechanism, which can ii 3

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be såhkOllS functional. The remote control locking mechanism for the vox can be mounted on either the door leaf of the tax door frame. When the locking mechanism is mounted on the door panel, the activation signals must be transferred from the magnetic device reader to the locking mechanism by special means. The transmission can take place, for example, with or-wooden cables, frame connectors, electromagnetic waves, etc.

However, the space in the door panel from the remote transmitter to the lock mechanism is very limited, especially if 10 standardized lock housings are used. Therefore, it is difficult to equip the locking mechanism with tongue-moving actuators.

Once the lock mechanism is mounted on the door frame, it is slightly easier to transfer signals from a separate signal-15 conversion system for controlling the lock mechanism. The disadvantage of installing the locking mechanism in the door frame is that the space is quite limited, especially in the depth direction. Therefore, the latch plates of such locking mechanisms need to be small, but then another problem arises, namely how to obtain a sufficiently good burglary resistance.

In certain cases, it is desired for the remote control to control a plurality of doors by means of locking devices with fixed tongues projecting, for example, at least 20 mm beyond the plane of the longitudinal edge surface of the door panel so that said doors can be opened and closed simultaneously. This vox may be desirable for security reasons but causes myds problem. When all the doors are locked at the same time, someone may want to enter through only one door. Then it would not make sense to open all 30 doors, and therefore it is desirable to be able to open or close just that door on the spot. The problem in the case of tås-s3 is that a single lock mechanism as well as remote transmission and location of sSå tea is desired. With the prior art, this is difficult to achieve with a locking mechanism mounted on the door frame, because the overall dimensions of the sal plate have to be large.

A disadvantage of electric locking devices mounted on a door frame is the difficulty of obtaining sufficient security, for example, against burglary. It is important here that the tongue adheres properly to the latch plate, which is difficult to implement with prior art devices.

A known locking device of this type is described in DE-A-3 330 556, which shows both that the gripping of the locking member 10 on the tongue is limited and that the locking mechanism takes up a relatively large space, which in turn means that the overall dimensions of the frame must be large.

US-A-813 119 discloses a second locking device 15 which locks the plate parallel to the door plate when moved by a tongue inserted into the latch plate. This plate works with såh-kMomagnets, which can start to fluctuate under the influence of an external force, and can thus lose their locking effect. The overall dimensions of this locking device are also relatively large.

If the locking devices are subjected to a large force such as that mentioned above, the locking mechanism may possibly move out of its locking position and then open. Thus, it is difficult to provide a locking mechanism that is sufficiently resistant to damage even after it has moved out of its normal locking position.

It is not suitable for apartment buildings, e.g. Due to the risk of burglary, the house owner / caretaker has traditional keys of the traditional type. Especially for owners of large 30 houses, such as companies that own local serviced apartments, losing a master key can be costly and cause great inconvenience. At the same time, it is impractical to give the caretaker the key to each apartment. A particular problem arises when repairs or similar tGita have to be performed in a particular dwelling. In that case, the apartment owner must either stay at home and wait for the core, or give a reliable person, such as a caretaker, a spare key to the front cover.

The present invention seeks to solve the above-mentioned problems and to counteract the disadvantages. The main cream of the present invention is therefore to provide a locking device which ensures a proper locking engagement of the tongue in the latch plate to prevent the lock from being opened.

A further object is to facilitate remote access and / or retrieval of the locking mechanism.

An additional goal of the Eras is to allow the locking mechanism to be mounted on a latch plate with smaller overall dimensions that can be mounted on conventional frames.

An additional goal of Eras is to provide a locking mechanism to lock the locking mechanism securely.

Finally, it is an object of the invention to provide a locking mechanism which, when sold out of the locking position, provides a very high degree of certainty against unrestricted opening.

According to the invention, the above-mentioned objects are achieved in that a locking device as shown has the features mentioned in the characterizing part of claim 1.

Additional objects and advantages of the invention as well as others: 25 characteristic features are set out in the appended non-independent claims.

The invention will now be described in detail with reference to the accompanying drawings, which illustrate some embodiments.

Fig. 1 is an overview of the locking device of the invention in its main function, i.e. when used in a door, Fig. 2 shows a latch plate with a locking mechanism and an associated front plate, Fig. 91910 is a perspective view of the locking slider and the associated drive device with some parts cross-section of the locking mechanism with the locking slide 5 in the locking position, Fig. 5 schematically shows the interaction between the tongue and the locking mechanism with the locking slide in the locking position, Fig. 6 is a perspective view of the alternative locking slide and gripped in response, Fig. 8 shows the locking slide in its locking position, and Fig. 9 is a cross-section along the line IX-IX in Fig. 8.

As shown in Fig. 1, the locking device according to the invention is used, for example, in a door 1 in a wall 2. A tongue 3, which in this embodiment is fixed, protrudes from the longitudinal edge surface of the semi-open door panel 4. The latch plate 5 handles the locking mechanism, which is open. The opening 6 is ready to receive the tongue 3. When the door is closed, i.e. the tongue 3 is inserted into the door frame; 25 to the latch plate 5 mounted on the 7, the locking mechanism can be activated from the control unit 8 via the signal lines 9.

Figure 2 illustrates the entire latch plate 5 comprising the front plate 100 and the control member 200 as well as the associated parts. For clarity, the front plate 100 and the control member 200 30 are separate & Sn from each other. It is clear that these two parts are fastened with a screw connection. The front plate 100 is a visible part of the latch plate 5 and, according to this embodiment, has an L-shaped cross section. An opening 101 is provided in the front plate 100, which extends from the common line 35 of both branches 102, 103 some distance to each branch. The thickness and width of the silicon 91910 7 of the opening 101 allow a tongue 3 of a certain size to be inserted (see Fig. 5).

The guide member 200 is provided with an opening 201 of the same length as the opening 101 of the front plate 100. According to this preferred embodiment 5, the guide member is U-shaped in cross section, and the opening 201 is made in a branch 202. Two holes 204 are made in the opposite branch 203. to insert the Phillips screw 300. If the control member 200 and the secret plate 5 are to be mounted in a certain way adjacent to the door frame 7, a counter plate 301 can be mounted on the opposite side of the frame 7. Both clamping screws 300 are then filled with the frame 7

The locking slide 400 is mounted on the control member 200, 15 and ndma together form the actual locking mechanism. The locking slide 400 has two branches 401, 402 connected to each other by connecting plates 403 and end walls 404. The locking slide 400 moves along the guide member 200 to a position where the branch 401 covers the opening 201. In addition, the locking slide 400 is provided with an opening 405 for a cross member 205 years. When the locking slider 400 has entered its locking position, the opening 405 thus engages the cross-section 205, which provides security against breaking of the locking device by force.

• According to a preferred embodiment, the locking slide 400 is moved by a motor 500 provided with a threaded guide screw 501 extending through the threaded opening 406 into the end wall 404. As the motor 500 rotates the guide screw 501, the locking slide 400 moves the length of the latch plate 200.

The motor 500 is mounted on the motor support portion 502, which is an L-shaped portion (see Figure 3). The motor 500 is connected to another branch, through which the control screw 501 is pushed. The guide screw 501 engages a threaded hole 406 in the end wall 404 of the locking slide 35 400.

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As the guide screw 501 is rotated, the locking slide 400 moves along the sliding surface formed by the second arm 503 of the motor support portion 502. A through hole 504, described below, is made in the arm 503.

Fig. 4 is a schematic cross-sectional view of the control member 200, the locking slide 400, the motor 500 and the motor support 502. In addition, a spring 505 is shown which applies pressure to the motor 500. This pressure is transmitted to the locking slide 400 and causes the opening 405 to engage the core 205. in the locked position. Further, the compression of the spring 505 causes the hole 504 to be located immediately on the anti-burglary portion 206. In a preferred embodiment of the invention, the anti-burglary portion 206 resembles a round screw end. As long as the locking slide 400 operates normally, i.e. by means of the motor 500, the motor support part 502 remains where it is. The burglary preventing part 206 is then in the hole 504.

If, on the other hand, the locking slide 400 is activated by an external pressure, for example during an intrusion attempt, and 20 moves out of its locking position, the situation changes. The locking slide 400 can then move slightly out of its locking position, but not so far as to lose the locking effect of the tongue 3. When the locking slide 400 moves in this way, the entire motor support portion 502 moves simultaneously; 25 sesti. As the engine support portion 502 is now displaced, the hole 504 disengages from the burglar alarm portion 206, and the entire engine support portion 502 displaces from its normal position on the control member 200. The displaced position of the motor support part 502 is shown in broken lines at Z.

30 Then all the components of the locking mechanism are at an inappropriate angle to each other, which means that the locking mechanism is out of the game and can no longer be activated.

Thus, if someone tries to break in by violently breaking the locking mechanism 35, the result will be reversed. Even after a Finnish attempt, the locking slide retains the locking effect of 400 languages 3.

Fig. 5, which for the sake of clarity shows the closing operation compared to Fig. 1 from the opposite direction, 5 illustrates how the tongue 3 cooperates with the locking slider 400. Ovilevyå 4 in the direction of the arrow until the tongue 3 is a control member 200 in the opening 201. Tanrån JAAL-ing latching slide are transferred by means of the motor 400 to 500 and an OH jausruuvin 501 to the locked position, in which the tongue 3 is housed 10. In tongue 3 this position is marked with dots.

Referring now again to Figure 2. In some cases, it is desirable to lock the locking mechanism in a particular position, for example, the locking position. A hole 207 is formed in the connecting plate 209 of the guide member 200 for receiving the pin 15 208. The pin 208 can be inserted through the hole 104 in the front plate 100 and made to engage the hole 207, whereby the locking slide 400 is effectively locked.

The spiked locking member removes the bad 20 sides of the master keys. The owner of the apartment usually activates a locking mechanism mounted on the door panel, to which only the owner of the apartment has the keys. The locking mechanism according to the present invention is mounted on a latch plate. The actuating means for the locking mechanism may be a normal cylinder which must be rotated several times • 25 times in order to cause the guide screw to move the locking slide. According to a preferred embodiment, the drive device is an electric motor. The essential point is that the caretaker can use the activation device. As long as the apartment owner uses the door in the normal way, the locking slide is in the locked position and the pin is in its locked position. When this is the case, the door can only be opened with the locking mechanism mounted on the door leaf.

When the caretaker needs to fast in the apartment, the resident simply removes the pin that day. Then the caretaker can activate the locking mechanism on the latch plate and enter the apartment.

Fig. 6 shows a differently designed locking slide 450 consisting of two parts, namely a first part 451 connected to the guide screw 501 and a second part 452 formed with an elongate projection 453 for engaging the two grooves 150 which join in the opening 6 in the latch plate 5. Both parts 451 and 452 of the locking slide 450 are connected to each other by means of a U-shaped connecting link 454.

The locking function of the two-piece locking slide 450 is shown in Figs. 7 and 8. The locking slide 450 is moved in the same manner as before by turning the guide screw 501. In the locking position, the second portion 452 of the locking slide 450 first engages the fixed stop 600 formed on the latch plate 5, which, when the guide screw 501 is rotated, causes the portion 452 to move in a direction at right angles to the direction of movement of the locking plate 450 of the latch plate 5. The movement of the second part 452 takes place by means of a connecting band 454 and cams 455, 456 and 457, 458, respectively, formed in both parts 451 and 452 of the locking slide 450 and cooperating with each other. It will be appreciated that the locking slide 450 will most securely lock in the final locking position shown in Figure 8 due to the engagement of the elongate protrusion 453 in the grooves 150 (see myds in Figure 6). With this design, in the locking position, the locking slide 450 of the locking slide is locked.

Fig. 9 is a cross-sectional view of the latch plate 450 and the locking slide 450 mounted therein 30. The connecting band 454 is pivotally connected to both portions 451, 452 of the locking slide 450 by four guide pins 459. The size of the locking slide 450 is precisely matched to According to another embodiment 35 (not shown), the hardened steel plate 91910 11 is fixed to the locking slide outside the hand-held branch of the protrusion 453. The hardened plate placed between the inner walls of the sal plate 5 and said branch makes the device even more of a tamper-evident edge.

In short, it can be arranged that the present invention solves the above-mentioned problems and overcomes the above-mentioned disadvantages of the prior art. The following benefits can be obtained.

The locking mechanism operates in the latch plate 5 mainly in the axial direction 10, i.e. in the longitudinal direction of the door frame 7, whereby the overall dimensions, i.e. the depth to which the locking device extends in the frame, are longitudinal to the normal latch plate, e.g. about 20-30 mm.

Substantially all of the depth can be used to receive the tongue 15, thereby providing excellent tongue engagement with the locking slide and such a satisfactory resistance to breakage. If a two-piece locking slide 450 is used, the locking device becomes more tamper-proof.

20 The drive unit can be implemented in many ways, for example with sShkG engines, Manta-cylinder units, etc., or by connecting different drive units. The locking device can therefore be used both remotely and locally.

This invention relates to a locking device suitable for general use. The latch plate with a locking mechanism can thus be mounted on doors, gates, booms, shutters, etc. Furthermore, several locking devices can be mounted on the same door, and they do not even have to be mounted on the door frame. The dimensions of the locking device and the material of the ma-30 can be varied as required.

Finally, it is to be understood that the invention is not limited in milieu to the embodiments described above, but that various modifications are possible within the scope of the inventive idea defined in the appended claims.

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The motor 500 may also be rigidly mounted, in which case means are used to increase the breaking resistance, eslmerklksl a two-piece locking slide 450 and an associated protrusion 453 which locks the slide.

In addition, it should be mentioned that the linear displacement of the locking slider in the latch plate can be realized in different ways. The engine and steering screw can be replaced, for example, with a pneumatic or hydraulic Manta-cylinder unit-10 la or the like. The important point is that the locking slider moves between two positions in the latch plate, namely from the first unlocked position where the tongue can be inserted into the opening, to the second position where the locking slider closes the tongue and locks it so that the tongue 15 cannot be pulled out of the latch plate.

Claims (5)

13,91910 Patent Reviews: A locking device for a movable element S (4), 5 which element turns relative to a second element (7), the first element having a projecting fixed pin or an extensible tongue (3), while the second element handles a latch plate (5) with an opening ( 6) into which the tongue / pin (3) can be inserted, and the latch plate (5) has a locking slide (450) of U-shape and guided and movable inside and along the latch plate (5) substantially at right angles the tongue / pin (3) in a protruding locking position with the tongue / pin (3) locked to the latch plate (5) by a locking slider (450) surrounding the tongue / pin (3) to lock the movable element (4), which the locking device further provides a drive device (501) connected to the locking slide (450) to provide said displacement, the drive device (501) and the locking slide (450) 20 being mounted inside the latch plate (5), characterized in that the locking slide (450) two interconnected parts (451, 452), one (451) of which is connected to the drive device (501), while the other (452) is displaceable in the locking position at a substantially right angle to the direction of travel of the locking slider (450) relative to the locking slider (450) by means of a silent cam pile of two parts (451, 452), the second part (452) engaging the edge portion (150) of the opening (6) of the latch plate (5) to lock the slider (450) longitudinally in the locking position. Locking device according to claim 1, characterized in that the fixed stop (600) is arranged inside the latch plate (5), the second part (452) of the locking slide (450) engaging the stop (600) in the locking position to provide the locking slide (450) 35 said movement of the second part (452). * 9Ί910 14 Locking device according to Claim 1 or 2, characterized in that the second part (452) of the locking slide (450) has a protrusion (453) which, in the locking position, is displaced by said movement with the grooves (150), which engage the opening (6) of the latch plate (5). Locking device according to claim 3, characterized in that both parts (451, 452) of the locking slide (450) have cam surfaces (455-458) which cooperate with each other to move the second part (452) of the locking slide (450). with the grooves (150). Locking device according to one of the preceding claims, characterized in that the drive device encloses a guide screw (501) which is rotatable by means of a motor and which engages the threaded hole and passes through it into the locking slide (450). 91910 15